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WO/1999/051919A1 |
A multipurpose air conditioning apparatus is disclosed. The apparatus comprises fan assemblies (3, 13), a compressor (4), a condenser, an evaporator, a liquid and gas circuit, throttling means, air inlets, air outlets and means for redir...
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WO/1999/042768A1 |
A heat pump system includes, in an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant: a compressor (10); an interior heat exchanger (12); an exterior heat exchan...
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WO/1999/031444A1 |
An air-conditioner using an inflammable refrigerant, wherein an inner diameter of a liquid-side connecting pipe is set to less than 42.5 % of that of a gas-side connecting pipe to slenderize the liquid-side connecting pipe, slenderizing ...
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WO/1999/027314A1 |
A liquid-side closing valve (23) is provided between a liquid receiver (19) and an indoor heat exchanger (20) in a main circuit (12). On the downstream side of the liquid-side closing valve (23) is provided a coolant feeding unit (40A) e...
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WO/1999/026028A1 |
A refrigerating apparatus comprising a supercooling circuit (8) having a supercooling heat exchanger (15) provided between a condenser (3) and a main expansion mechanism (9), and an injection circuit (10) for injecting into an intermedia...
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WO/1999/023423A1 |
A heating and cooling system is disclosed. The system is designed to selectively heat or cool room air and to allow the refrigerant to flow in one of first and second expansion valves, thus improving the thermal efficiency during a heati...
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WO/1999/017065A1 |
An air cycling type air conditioner comprising a heat exchanger (3), an air compressor (1) adapted to compress the suction air, transfer the compressed air to the heat exchanger (3), compress the air transferred from the heat exchanger (...
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WO/1998/046959A1 |
An energy saving air-conditioning system having a high dehumidifying capability and capable of responding to an air-conditioning load flexibly, and a method of operating the same. Specifically, an air-conditioning system provided with a ...
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WO/1998/046957A1 |
An energy saving air-conditioning system which enables the moisture absorbing capability of a desiccant to increase by increasing the temperature, i.e. enthalpy, which is determined after the compression of a heat pump, of the overheated...
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WO/1998/044301A1 |
A heat transfer system for use in cooling and dehumidifying an interior space while rejecting heat to several alternative sources. The system incorporates three primary heat transfer coils (40, 60, 80) in a mechanical refrigeration cycle...
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WO/1998/044304A1 |
A closed circuit (13) is configured by connecting upper ends of existing refrigerant pipings (2A, 2B) of a refrigerant circuit with an upper connecting path (11) and lower ends thereof with a lower connecting path (12), and the closed ci...
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WO/1998/041803A1 |
A coolant circuit is formed by connecting an outdoor unit (5) and an indoor unit (6) by communication piping (18) including a gas pipe (16) and a liquid pipe (17). A substitute coolant R-410A is used as coolant circulating in the coolant...
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WO/1998/036227A1 |
A defrost control for a heat pump system initiates a defrost of the outdoor coil when certain computed conditions occur. The conditions include exceeding a limit as to the difference that may be permitted between the maximum indoor coil ...
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WO/1998/036228A1 |
A defrost control for a heat pump system initiates a defrost when certain computed conditions are exceeded. The conditions include a limit as to the difference that may be permitted between the maximum temperature difference of two measu...
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WO/1998/035189A1 |
Improvement in comfortableness and energy saving are achieved by exhibiting a capacity in response to respective demands of a plurality of rooms. A refrigerating system for a multiple room type air conditioning apparatus is constructed s...
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WO/1998/030651A1 |
A method for filling a mixed refrigerant, characterized in that, in using as the refrigerant a nonazeotropic mixture comprising 23 to 27 % by weight of difluoromethane, 13 to 17 % by weight of pentafluoroethane, and 58 to 62 % by weight ...
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WO/1998/029699A1 |
Other parts than an indoor unit (B) and an existing piping (21b) are removed from an existing refrigeration apparatus which uses R22 while the indoor unit (B) and the existing piping (21b) are left. A refrigerant-refrigerant heat exchang...
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WO/1998/012486A1 |
An air conditioner constituting a refrigerating cycle by connecting a compressor, a heat exchanger and an expansion valve in sequence, the air conditioner comprising an indoor unit (14c) allowing a first outdoor unit (15a) using a first ...
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WO/1998/006983A1 |
An air conditioner which comprises a refrigerant circuit (1), in which a refrigerant flows through a compressor (2), a condenser (3), a heat exchanger (10) for supercooling, a first expansion mechanism (4) and an evaporator (5) in this o...
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WO/1998/005907A1 |
At the first turning position of a main valve spool (8), one of two through-holes communicates with a low pressure outlet by a communicating trench (21) and the other through-hole communicates with a high pressure inlet by a guide trench...
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WO/1997/049957A1 |
A heating and cooling system (10) that provides interfacing between multiple zones in the system (10) and a variable speed heating and/or cooling device, such as a heat pump. The heating and cooling system (10) includes a master zone con...
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WO/1997/044625A1 |
Described are heat pump systems and methods for conditioning air, in which air is dehumidified including the steps of passage over an evaporator (5) to cool and dehumidify the air, followed by passage over a subcooler (3) to heat the air...
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WO/1997/043585A1 |
A primary compressor (12) and a booster compressor (10) connected in series are presented. A first conduit (14) connects the low side of a heating/cooling or refrigeration system to the inlet (18) of the booster compressor (10), the outl...
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WO/1997/040326A1 |
When the drainage fails, for example, a blower (24a) of a faulty side indoor unit (2) is stopped to fully close an electronic expansion valve (21a), and the temperature of a faulty side heat exchanger (23a) is detected by a thermistor (3...
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WO/1997/032168A1 |
A boosted air source heat pump system is presented having a primary compressor (24), a booster compressor (22) and an economizer (28). On activation of the heat pump system, the primary compressor (24) is operated. When the primary compr...
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WO/1997/031230A1 |
A heat transfer assembly including a compressor (17) to selectively deliver compressed refrigerant to first, second and third heat exchangers (12, 11, 13 respectively), together with the first and a second throttle valve (14 and 15) whic...
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WO/1997/024565A1 |
An apparatus for heating or cooling a space comprises a main flow loop including a compressor (1012), an outside heat exchanger (1014), an inside heat exchanger (1016) connected to allow working fluid to circulate therebetween, and a fir...
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WO/1997/020178A1 |
A thermal storage system (10) controller implements a near optimal control strategy for minimizing energy and demand costs. A system performance variable is determined and evaluated under a given set of environmental conditions for selec...
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WO/1997/019301A1 |
Cooling and cooling and heating equipment of absorption and compression types that is so small as a whole in size and so light in weight as to be installed in general houses and in which it is possible to switch its function from cooling...
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WO/1997/019304A1 |
A vapor compression air conditioning system (100, 200) that reduces power consumption during peak demand periods is characterized by four refrigerant circuits. A first circuit includes a compressor (12), a first heat exchanger (22) and a...
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WO/1997/015800A1 |
A heat exchanger (1) on the secondary heat source, which exchanges heat with a heat exchanger (12) on the primary heat source in a primary cooling circuit (A), is connected with an indoor heat exchanger (3) through a gas pipe (6) and a l...
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WO/1997/015789A1 |
A heat accumulation circuit or a refrigeration cycle is used as a heat source and cold or heat is imparted to a secondary cooling medium of a main cooling medium circuit (20) from the heat source. The cooling medium in the main cooling m...
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WO/1997/015799A1 |
A heat exchanger (1) on the secondary heat source, which exchanges heat with a heat exchanger (12) on the primary heat source in a primary cooling circuit (A), is connected with an indoor heat exchanger (3) through a gas pipe (6) and a l...
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WO/1997/009570A1 |
A hot heat source heat exchanger (1) receives heat from a primary refrigerant circuit and evaporates a liquid refrigerant. A cold heat source heat exchanger (2) is connected to the hot heat source heat exchanger (1) via a gas flow pipe (...
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WO/1996/041107A1 |
A desiccant assisted system comprising a first path (13) for process air extending from an exit of an enclosed space in series through a first zone (22A) of a desiccant wheel (22), a first zone (24a) of a heat exchange wheel (24) and an ...
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WO/1996/029554A1 |
An outdoor machine having a four-way valve, a compressor, an outdoor heat exchanger and an expansion means connected via a piping in that order and an indoor machine having an indoor expansion means and an indoor heat exchanger connected...
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WO/1996/027107A1 |
This decompression device is provided with partition walls (2, 3) projecting from an inner surface of a tubular body (1). The partition walls (2, 3) are provided with orifices (4, 5). A plurality of decompression mechanisms comprising th...
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WO/1996/013666A1 |
A blade (8), which divides a cylinder chamber (41) into a compression chamber (X) and a suction chamber (Y), is integrally secured to roller (7), which is fitted onto an eccentric portion (22) of a drive shaft (21), to extend radially ou...
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WO/1996/010156A2 |
According to a method of cooling gases, in particular air which is drawn in through a compressor, in a compressed air arrangement the gas flows alternately through at least one of a plurality of refrigerating driers (5, 6) equipped with ...
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WO/1996/002799A1 |
A refrigeration system is disclosed in which negative energy storage is provided to significantly reduce electrical energy consumption during peak air conditioning hours. A transfer pump (54) is provided in the system for pumping condens...
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WO/1996/000873A1 |
A refrigerator provided with a compression mechanism (21), an outdoor heat exchanger (24), an outdoor electric expansion valve (25) and an indoor heat exchanger (32), wherein the compression mechanism (21) is formed by connecting two com...
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WO/1996/000874A1 |
An improved combined ambient-air and earth exchange heat pump system includes a subterranean heat exchanger (11) and an ambient-air heat exchanger (13), both refrigerant-based, which are adapted to be selectively operated individually, s...
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WO/1996/000872A1 |
Two outdoor units (2A, 2B) and three indoor units (3A, 3B, 3C) are connected to a main liquid line (7L) and a main gas line (7G) in series and parallel, respectively. Lubricant balancing mechanisms (9A, 9B) are provided on the respective...
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WO/1996/000370A1 |
An apparatus for heating or cooling a space comprises a main flow loop including a compressor (1012), an outside heat exchanger (1014), an inside heat exchanger (1016) connected to allow working fluid to circulate therebetween, and a fir...
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WO/1995/033166A1 |
The present invention is directed to a heat pump system (10) and more particularly to a self-contained heat pump system incorporating a microprocessor based control system (162), a desuperheater (107), a dedicated refrigerant-potable wat...
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WO/1995/012098A1 |
When a defrosting requirement signal is outputted, the valve travel of a motorized expansion valve (5) is fully closed in a heating cycle so as to recover a refrigerant into a receiver (4). In addition, when a defrosting requirement sign...
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WO/1994/021976A1 |
A heat pump and air conditioning system (10, 110, 210, 310, 410, 510) is provided with a thermal storage device (56, 156, 256, 356, 456, 556), a variety of distribution devices for blocking or allowing flow of the system working fluid, a...
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WO/1994/020800A1 |
The refrigerator has two outdoor units (2A and 2B) to which, liquid lines (5A and 5B) and gas lines (6A and 6B) divided into the high pressure passages (65 and 66), and low pressure passages (67 and 68) are connected. To the liquid lines...
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WO/1994/019654A1 |
Liquid lines (5LA, 5LB) and gas lines (5GA, 5GB) are connected to a main liquid line (4L) and to a main gas line (4G), respectively, so that a master outdoor unit (2A) and a slave outdoor unit (2B) can be connected in parallel. The gas l...
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WO/1994/012834A1 |
A compressor (21), an outdoor heat exchanger (23), an electric expansion valve (25) through which a refrigerant flows in the opposite directions, and an indoor heat exchanger (31) are connected to form a reversely operable refrigerant ci...
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